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77 lines
2.5 KiB
Python
77 lines
2.5 KiB
Python
# Copyright 2000-2008 Michael Hudson-Doyle <micahel@gmail.com>
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# Armin Rigo
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#
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# All Rights Reserved
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#
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#
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# Permission to use, copy, modify, and distribute this software and
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# its documentation for any purpose is hereby granted without fee,
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# provided that the above copyright notice appear in all copies and
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# that both that copyright notice and this permission notice appear in
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# supporting documentation.
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#
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# THE AUTHOR MICHAEL HUDSON DISCLAIMS ALL WARRANTIES WITH REGARD TO
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# THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
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# AND FITNESS, IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL,
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# INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
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# RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
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# CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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# CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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from .terminfo import TermInfo
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from .trace import trace
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from .base_eventqueue import BaseEventQueue
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from termios import tcgetattr, VERASE
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import os
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# Mapping of human-readable key names to their terminal-specific codes
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TERMINAL_KEYNAMES = {
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"delete": "kdch1",
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"down": "kcud1",
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"end": "kend",
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"enter": "kent",
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"home": "khome",
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"insert": "kich1",
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"left": "kcub1",
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"page down": "knp",
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"page up": "kpp",
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"right": "kcuf1",
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"up": "kcuu1",
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}
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# Function keys F1-F20 mapping
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TERMINAL_KEYNAMES.update(("f%d" % i, "kf%d" % i) for i in range(1, 21))
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# Known CTRL-arrow keycodes
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CTRL_ARROW_KEYCODES= {
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# for xterm, gnome-terminal, xfce terminal, etc.
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b'\033[1;5D': 'ctrl left',
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b'\033[1;5C': 'ctrl right',
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# for rxvt
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b'\033Od': 'ctrl left',
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b'\033Oc': 'ctrl right',
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}
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def get_terminal_keycodes(ti: TermInfo) -> dict[bytes, str]:
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"""
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Generates a dictionary mapping terminal keycodes to human-readable names.
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"""
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keycodes = {}
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for key, terminal_code in TERMINAL_KEYNAMES.items():
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keycode = ti.get(terminal_code)
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trace('key {key} tiname {terminal_code} keycode {keycode!r}', **locals())
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if keycode:
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keycodes[keycode] = key
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keycodes.update(CTRL_ARROW_KEYCODES)
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return keycodes
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class EventQueue(BaseEventQueue):
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def __init__(self, fd: int, encoding: str, ti: TermInfo) -> None:
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keycodes = get_terminal_keycodes(ti)
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if os.isatty(fd):
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backspace = tcgetattr(fd)[6][VERASE]
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keycodes[backspace] = "backspace"
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BaseEventQueue.__init__(self, encoding, keycodes)
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